There are no custom maps in SSL Steam. So when you say you created maps, I'm going to assume you mean on SSL2 (flash version). You purchase custom maps in SSL2 first, once doing this you go to the settings to create a game. You click on either arrows going left or right where it says ''Random'' until you get to custom maps. Then select the custom map you wish to use. If I'm wrong please about you talking about the flash version let me know. For now i will move your thread to the assumed appropriate section on the forum.